.box::-webkit-scrollbar {
  display: none;
}
.box {
  position: relative;
  overflow: auto;
  .delayBackground {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 98;
    background-color: rgba(0, 0, 0, 0.5)
  }
    aside {  
      padding: 0 0 0 10px;
    }
    //展示所有学科下的阶段
    .left {
      .stages {
      border-radius: 8px;
      padding: 15px 5px 30px 10px;
      background-color: #fff;
      height: 100%;
      font-size: 15px;
      li {
        padding: 10px 0 10px 5px;
        margin-top: 10px;
        font-weight: 700;
        color: rgb(82, 82, 83);
      }
    }
    }
   .contentLeft {
      position: absolute;
      top: 10px;
      right: 0;
      border-radius: 10px;
      width: 83%;
      height: 100%;
        .nav {
          width: 100%;
          height: 45px;
          border-radius: 10px;
          line-height: 45px;
          padding: 0 10px;
          // border: 1px solid red;
          font-size: 16px;
          .search {
            position: absolute;
            top: 10px;
            right: 200px;
            width: 100px;
            height: 30px;
            text-align: center;
            border: none;
            outline: none;
            border: 1px solid #bbb;
            border-radius: 10px;
            font-size: 10px;
            padding: 5px;
            transition: width 0.2s linear;
          }
          .SubjectBtn{
            cursor: pointer;
            position: absolute;
            top: 0;
            right: 100px; 
            ul{
              display: flex;
              li{   
                margin-right: 10px;
                  a{
                    background-color: rgba(255, 255, 255, 0.8);
                    padding: 5px;
                    font-size: 14px;
                    border-radius: 10px;
                  }
              }
            }    
          }
          .contentLeft-contents::-webkit-scrollbar {
            display: none;
          }
          .contentLeft-contents {
              position: relative;
              // overflow: auto;
              // max-height: 650px;
              background-color: rgba(255, 255, 255, 0.8);
              padding-bottom: 10px;
          }     
        }
  }
}

/* 开启关卡 */
.el-dialog__body {
  padding: 20px 20px 30px 20px;
}
.el-dialog__header {
  padding: 0;
}
.el-dialog__body .contexts {
  margin-top: 20px;
  width: 100%;
  height: 450px;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  padding: 20px 0 0 40px;
  position: relative;
  .el-input__inner{
    width: 52%;
  }
  .el-input__icon {
    width: 44px;
  }
  #textarea {
    resize: none;
    padding: 10px;
    outline: none;
    border: 1px solid #ccc;
  }
  #textarea::-webkit-input-placeholder {
    color: #ccc;
    font-size: 14px;
  }
  #textarea:-moz-placeholder {
    color: #ccc;
    font-size: 14px;
  }
  #textarea:-ms-input-placeholder {
    color: #ccc;
    font-size: 14px;
  }
  .startbtn {
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    top: 95%;
    color: #fff;
    background-color: rgb(20, 81, 244);
    border: none;
    padding: 5px 20px;
    font-size: 14px;
    cursor: pointer;
    border-radius: 5px;
  }
}
